Chapter 1.3

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Vocabulary

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Pangaea: a supercontinent
Continental Drift: the theory that the continents slowly drifted
Fossil: any trace of an ancient organization preserved in rock

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Outline

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The Theory of Continental Drift

• Wengner made hypothesis about continents
  • hypothesis is that continents drifted apart
    • hypothesis includes that the continents were once connected
• finds evidence
  • evidence from landforms-mountain ranges,glacier deposits, coal beds
  • evidence from fossils
    • mesosaurus,lystrosaurus, glossopteris
  • evidence from climate
    • tropical plants in a place with a polar climate
    • galciers in South Africa

Scientists Reject Wegner's Theory

• Wegner made a new theory of how mountians form
• Wegner wasn't able to explain how the continents drifted

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